Loei is a province in Thailand, belonging to the northeast region, about 520 kilometers from Bangkok. It is bounded by Laos in the north by the Mekong River and the Ling River; in the south by Khon Kaen and Phetchabun; in the east by Nong Khai and Torong and Nongmak Muang Phu; and in the west by Pangsilok.